I confess to being a stickler for correct grammar and speech. I also have a fascination with language and words and what they say or don't say by implication, and how they are sometimes inadequate in capturing an emotion or conveying a message; not to mention how they can be misinterpreted because people hear what they want to hear. What power words pack!
I realize that I'm "old school" and that my sentiments on this subject can be considered superficial and pedantic in today's world. But, my thinking as has always been that when you can compete with your would-be oppressor on his level by correctly using his language, this neutralizes his advantage and very often gains his respect. So correct speech can be a tool as well as a weapon. This is just an eccentricity of mine, I guess.
Of course there are people who can effectively get their point across by using incorrect grammar or speaking slang, but there will always be those who will judge and classify you by your speech. Just as when it comes to black folks, made-up, multi-syllable names with dashes and apostrophes send up red flags to white employees, whether justified or not.
Of course, out of necessity, black folks are bilingual when it comes to Standard English and Ebonics.
BTW, one thing that many people seem to snag on when writing, is the difference between the words, "effect" and "affect". "Affect" is a verb used to express action. "Effect" is a noun because it is the name of a thing. So, the sunshine affects the flowers because the "effect" of the sun helps them grow. Also, no apostrophe is necessary when "its" is used as a possessive pronoun because it is a possessive pronoun on its own. "It's" contains an apostrophe when it is used as a contraction of "it is". So, it's cold out side. And the weather is taking its time to warm up. This is for detail-oriented people.
Since cursive writing is becoming extinct, perhaps grammatical technicalities will, too. Language does gradually evolve in collaboration with its relevancy to the culture.